I am trying to compile OpenFOAM-1.5 (official version) on our clusters (Linux 2.6.9-42.7sp.XCsmp, Optron CPUs, HP-MPI library), with the three installed versions of gcc - 3.4.5, 4.2.1, and 4.3.0. I consistently get the following compilation error (which affects only the parallel part of OpenFOAM; I can run serial tests without problems):